6. Pam purchased 10 percent of Sun Company’s 100,000 shares of common stock on January 2 for $100,000. On December 31, Pam purchased an additional 20,000 shares of Sun for $300,000. There was no goodwill as a result of either acquisition, and Sun had not issued any additional stock during the year. Sun reported earnings of $600,000 for the year. What amount should Pam report in its December 31 balance sheet as investment in Sun?

a $340,000 b $400,000 c $460,000 d $580,000